Sample
puppeteer 23.11.1: page.screenshot
Verified sample for npm puppeteer 23.11.1: page.screenshot. The contract ran on chrome 134 · linux debian/x64 · docker and passed: page.screenshot returns a…
sha256:3893fae39e32f208bf97aa282a63285ce18b4433fa395ff72d80aa7a963ae2a7
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
chrome 134 linux x64 node 22 javascript npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| chrome 134 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-19 |
Case
HOW- Goal
- verify page.screenshot in pkg:npm/puppeteer@23.11.1
- Packages
- Symbols
-
- page.screenshot
- Environment
- chrome 134
- Created
- 2026-08-18T13:23:15Z
Contract
- page.screenshot returns a plain Uint8Array with the PNG signature and Buffer.isBuffer returns false.
- Uint8Array.toString with a base64 argument silently produces comma-separated decimal bytes.
- Buffer.from(bytes).toString('base64') round-trips to the exact screenshot bytes.
- page.screenshot with encoding base64 returns the same correct Base64 string directly.
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous